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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::StylePropertyMapReadOnlyMethods;
use dom::bindings::codegen::Bindings::StylePropertyMapReadOnlyBinding::Wrap;
use dom::bindings::reflector::Reflector;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::root::{Dom, Root};
use dom::bindings::str::DOMString;
use dom::cssstylevalue::CSSStyleValue;
use dom::globalscope::GlobalScope;
use dom_struct::dom_struct;
use servo_atoms::Atom;
use std::cmp::Ordering;
use std::collections::HashMap;
use std::iter::Iterator;
use style::custom_properties;
#[dom_struct]
pub struct StylePropertyMapReadOnly {
reflector: Reflector,
entries: HashMap<Atom, Dom<CSSStyleValue>>,
}
impl StylePropertyMapReadOnly {
fn new_inherited<Entries>(entries: Entries) -> StylePropertyMapReadOnly where
Entries: IntoIterator<Item=(Atom, Dom<CSSStyleValue>)>
{
StylePropertyMapReadOnly {
reflector: Reflector::new(),
entries: entries.into_iter().collect(),
}
}
pub fn from_iter<Entries>(global: &GlobalScope, entries: Entries) -> Root<StylePropertyMapReadOnly> where
Entries: IntoIterator<Item=(Atom, String)>,
{
let mut keys = Vec::new();
rooted_vec!(let mut values);
let iter = entries.into_iter();
let (lo, _) = iter.size_hint();
keys.reserve(lo);
values.reserve(lo);
for (key, value) in iter {
let value = CSSStyleValue::new(global, value);
keys.push(key);
values.push(Dom::from_ref(&*value));
}
let iter = keys.drain(..).zip(values.iter().cloned());
reflect_dom_object(box StylePropertyMapReadOnly::new_inherited(iter), global, Wrap)
}
}
impl StylePropertyMapReadOnlyMethods for StylePropertyMapReadOnly {
/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-get
fn Get(&self, property: DOMString) -> Option<Root<CSSStyleValue>> {
// TODO: avoid constructing an Atom
self.entries.get(&Atom::from(property)).map(|value| Root::from_ref(&**value))
}
/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-has
fn Has(&self, property: DOMString) -> bool {
// TODO: avoid constructing an Atom
self.entries.contains_key(&Atom::from(property))
}
/// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymapreadonly-getproperties
fn GetProperties(&self) -> Vec<DOMString> {
let mut result: Vec<DOMString> = self.entries.keys()
.map(|key| DOMString::from(&**key))
.collect();
// https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-getproperties
// requires this sort order
result.sort_by(|key1, key2| {
if let Ok(key1) = custom_properties::parse_name(key1) {
if let Ok(key2) = custom_properties::parse_name(key2) {
key1.cmp(key2)
} else {
Ordering::Greater
}
} else {
if let Ok(_) = custom_properties::parse_name(key2) {
Ordering::Less
} else {
key1.cmp(key2)
}
}
});
result
}
}
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